horizontal scroll container not starting from the left side

Hello:

I have followed the instructions found on the following page and attempted to add horizon scrolling to a container on my page.
https://generatepress.com/forums/topic/horizontal-scroll-container/

In the codes, I change the max-width to allow this to work on the desktop.

But for some reason, the first of the 6 containers in the grid is not being displayed. How can I fix it?

Here's the link to the page section in question. It's the 'Trim Summary' Section:
https://evto.ca/2023-toyota-highlander-configurations/#summary